1-й файл
11. C
12 D
13 having been heard
14 being brought
15having drawn
16 a
17 b
18 The patient didn't have to take this medicine.
19 Why did Koch go to Wgypt in 1883?
20 How long has doctor been examining the patient?
файл-2
11. d
12. b
13. having been taken
14. having seen
15 being seen
16 c
17 b
18 We don't have to extend our observations/We mustn't extend pur observations(на всякий случай. но первый вариант точно верный тут)
19 What did D.I. Ivanovsky have to make?
20 When did D. I. Ivanovsky graduate from Petersburg University?
файл-3
1. b
2 b
3 d
4 c
5 d
6 b
7 b
8 a
9 c
10 b
4-й файл
1d
2a(тут плоховато видно)
3 c
4b
5d
6c
7 c (a я бы тоже сказал бы)
8 c
9 c
10 d
5-й файл
11 c
12 d
13 having found
14 having been revealed
15 being caused
16 a
17 b
18 He does not have to do this work
19 When was D. I. Ivanovsky born?
20 How can the doctor reveal the consolidation in the lung?
С тебя 100500 пкт =)) Шутка.
Удачи.